Tested with two AA batteries and is working. Missing back battery cover, also tip on antenna but still picks up radio signals Product description: ICF-M33RDS Sony is a radio with RDS Radio Data System. RDS is a digital information sytem developped for radio by the European Broadcasting Union. Using 57 khz sub-carrier to FM broadcasting, RDS enables to receive station names and traffic information. Automatic current-time synchronization by RDS-signal. Automatic search and switch to a frequency with a relatively stronger signal for a station broadcasting on multiple frequencies. Preset function for up to 10 stations in FM and 5 stations in AM/LW.
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